Anyone gone efi yet? What did you choose

67Dart273 said
I guess there's disadvantages to all of 'em

My opinion of FAST is that it's way too proprietary and not easily configurable to different engine combos

Holley is much more adaptable (HP or Dominator) but they are sometimes stingy on info. One big ***** example is that if you want to add a simple O2 gauge to the HP, THEY LEFT THE WIRE OUT of the connector / harness!!!! "It comes with the gauge" but the gauge instructions are vague.

Now let's "call a spade a spade." I think (don't know) why this is .....is because probably an aftermarket O2 would work, and Holley just doesn't want you to KNOW that.

But overall I'm pretty happy.........very very configurable to different setups (TBI, multiport, different ignition setups) and different HP levels.

Megasquirt..........I think they need to do some serious reorganization. Some of their systems are getting just plain expensive (and sophisticated) but they STILL "run the outfit" like a backroom factory. In other words they need to improve and re- re - organize their website info. "It's a mess" trying to figure out "what goes with what" in their systems.

I will say that Matt Cramer (Kramer?) is a really helpful guy

Halfway through the install I was wishing we'd have stayed carbureted. But after working out most of the kinks I'd have to say that we're pretty pleased with the FAST. I was disappointed to see that the FAST was only intended for naturally aspirated engines though. If we decide to go to fuel injection on our blown 512 we'll have to look at other options. I take it that you're running the Holley setup. I'm not super familiar with it. From what you've said about it not coming with an O2 sensor, I assume it's not adjusting air/fuel ratios based on exhaust output. Assuming it does use some form of ECU to adjust mixture, what type of inputs (sensors) is it using? I assume a throttle position sensor, mass air flow... Temperature? Fuel pressure? Any RPM or timing sensors?